<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      #hi {
        color: red;
      }

      .hello {
        color: green;
      }

      h1 {
        color: blue;
      }

      div#box {
        color: yellow;
      }

      div.box {
        color: pink;
        background-color: gray;
      }

      .list ul li.wk {
        background-color: pink;
      }

      div #star .wk {
        background-color: skyblue;
      }

      div ul#star li.wk {
        background-color: orange;
      }

      p {
        color: red !important;
      }
    </style>
  </head>
  <body>
    <h1 class="hello" id="hi">大家好</h1>

    <div id="box" class="box">祝福大家</div>

    <div class="list">
      <ul id="star">
        <li>八戒</li>
        <li class="wk" id="wk" style="background-color: brown">悟空</li>
        <li>悟净</li>
      </ul>
    </div>

    <p style="color: green !important">大头娃娃好难！</p>
  </body>
</html>
